FATHI,


First = what is the equivalent material you have found so far I mean equivalent in terms of ASTM or SA ???
>>>>>>>> I found JIS SM 53 B, it's equivalent to AISI A633 Grade E.

Second :
>>>>>>>>Yield stress = Re = 380 MPA = 55 ksi
>>>>>>>>tensile strength =Rm = 520 MPA = 75 ksi

Third = Are you checking an old vessels or a you designing a New one ?
>>>>>>>> Since I will be using different type/grade of plates, it's going to be a new design. Considering the columns that support the tank, etc..

Fourth = Checking an old vessels could be done with API 579
>>>>>>>> Not applicable

Fifth : (based on the general notes of the old tank's drawing)
>>>>>>>> fluid density = 56.92 lbs/cu.ft.
>>>>>>>> Corrosion allowance = none
>>>>>>>> Vacuum Rating = 25 psig
>>>>>>>> Hydrostatic test = 125 psi at top with sphere full of water 8.788 kg/cu.cm
>>>>>>>> Design Temp. = Ambient 55 deg. C
>>>>>>>> Medium = Vinyl Chloride Monomer, vapor

Thanks for your help, you're brilliant!!

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